US3724859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette magnetic tape recorder
Assignee: McGraw Edison Co
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Filing: 1971-11-15
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Granted: 1973-04-03
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Expires: 1991-11-15
Abstract
Abstract A tape recorder using a cassette type magazine is electrically controlled from a remote station with provision of suitable interlocks in the electrical control system to enable the user to select normal forward drive in recording or reproducing, fast (scan) rewind drive or fast-forward drive.
Inventors
- 👤 R Kobler
- 👤 W Fagan
- 👤 E Feldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:18
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/10; G11B15/18; G11B15/1883
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
125 words
In a tape recorder machine including supply and take-up reels for a tape, a drive motor, a record-reproduce head, a drive capstan and a pinch roller for engaging the tape with said capstan: the combination of a carrier plate for said head and pinch roller shiftable in retracting and return directions respectively to disengage and engage said head and pinch roller with the tape, first and second shiftable means for coupling said drive motor respectively to said supply and take-up reels to drive the tape in scan rewind and scan forward directions, and selector means on said carrier plate shiftable into rewind and fast-forward positions for causing said first and second coupling means to be actuated respectively during the retracting movement of said carrier plate.
Claim 2
Dependent Claim
125 words
In a tape recorder machine including supply and take-up reels for a tape, a drive motor, a record-reproduce head, a drive capstan and a pinch roller for engaging the tape with said capstan: the combination of a carrier plate for said head and pinch roller shiftable in retracting and return directions respectively to disengage and engage said head and pinch roller with the tape, first and second shiftable means for coupling said drive motor respectively to said supply and take-up reels to drive the tape in scan rewind and scan forward directions, and selector means on said carrier plate shiftable into rewind and fast-forward positions for causing said first and second coupling means to be actuated respectively during the retracting movement of said carrier plate.
Claim 3
Dependent Claim
34 words
The combination set forth in claim 1 including a latch member for latching said carrier plate in retracted position, and means responsive to the latching of said carrier plate for starting said drive motor.
Claim 4
Dependent Claim
42 words
The combination set forth in claim 1 including a latch member for latching said carrier plate in retracted position, a scan solenoid for retracting said carRier plate, and means responsive to the latching of said carrier plate for deenergizing said scan solenoid.
Claim 5
Dependent Claim
46 words
The combination set forth in claim 1 including a latch member for latching said carrier plate in retracted position, an unlatching solenoid for releasing said latching member, and means responsive to a return of said carrier plate from a latched position for deenergizing said unlatching solenoid.
Claim 6
Dependent Claim
75 words
The combination set forth in claim 1 including a latch member for latching said carrier plate in retracted position, a fast-forward solenoid for shifting said selector means into fast-forward position, means controlled by the positioning of said carrier plate for activating said fast-forward solenoid only when said carrier plate is in a return position, and means operated by said carrier plate as the same is shifted into a retracted position for deenergizing said fast-forward solenoid.
Claim 7
Dependent Claim
43 words
The combination set forth in claim 5 including a scan solenoid for shifting said carrier plate into retracted position, and means responsive to an activation of said fast-forward solenoid for activating said scan solenoid to place said machine in a fast-forward drive condition.
Claim 8
Dependent Claim
25 words
The combination set forth in claim 6 including means responsive to the latching of said carrier plate in retracted position for deenergizing said scan solenoid.
Claim 9
Dependent Claim
60 words
The combination set forth in claim 7 wherein said carrier plate is spring-biased into return position and said selector means is spring-biased to rewind position, including an unlatching solenoid operable only when said carrier plate is in a latched position for releasing said latching member, and means responsive to a return of said carrier plate for deenergizing said unlatching solenoid.
Claim 10
Dependent Claim
46 words
The combination set forth in claim 1 wherein said selector means is shiftable between rewind and fast-forward position only when said carrier plate is in a return position, including means for latching said selector means against shifting movement when said carrier plate is in retracted position.
Claim 11
Dependent Claim
68 words
The combination set forth in claim 9 including spring means biasing said selector means in rewind position, a fast-forward solenoid for shifting said selector means into fast-forward position, a scan solenoid for retracting said carrier plate, means responsive to a retracting of said carrier plate for deenergizing said fast-forward solenoid, and means responsive to a latching of said carrier plate in retracted position for deenergizing said scan solenoid.
Claim 12
Dependent Claim
54 words
The combination set forth in claim 1 including a latch means for latching said carrier plate in retracted position, a rewind control switch, and circuit means responsive to closing said rewind control switch when said selector means is in rewind position and said carrier plate is in latched position for starting said drive motor.
Claim 13
Dependent Claim
55 words
The combination set forth in claim 11 including a scan solenoid for shifting said carrier plate into retracted position, means biasing said selector means in rewind position, and circuit means responsive to closing said rewind control switch while said carrier plate is unlatched for activating said scan solenoid to shift said machine into rewind condition.
Claim 14
Dependent Claim
110 words
The combination set forth in claim 12 including a fast-forward solenoid for shifting said selector means into fast-forward position, an unlatching solenoid for releasing said latch means, and circuit means responsive to pressing said rewind control switch while said carrier plate is latched in retracted position and said selector means is held in fast-forward position for activating said unlatching solenoid to return said carriage plate and allow return of said selector means to rewind position by said biasing means and thereupon to activate said scan solenoid to shift said carrier plate back into retracted position while said selector means is in rewind position to start said machine in fast rewind.
Claim 15
Dependent Claim
73 words
The combination set forth in claim 1 including a latch means for latching said carRier plate in retracted position, a fast-forward solenoid for shifting said selector means into fast-forward position, a fast-forward control switch, and circuit means responsive to closing said fast-forward control switch while said carrier plate is latched in retracted position and said selector means is in fast-forward position for starting said drive motor to put said machine in fast-forward drive.
Claim 16
Dependent Claim
115 words
The combination set forth in claim 14 including a scan solenoid for retracting said carrier plate into latched position, and circuit means responsive to pressing said fast-forward control switch closed while said carriage is in return position and said selector means is in rewind position for activating said fast-forward solenoid to shift said selector means into fast-forward position and for activating thereupon said scan solenoid to retract said carriage plate to latch position, means responsive to the movement of said carriage plate into latched position for deenergizing said fast-forward solenoid, and means responsive to the latching of said carrier plate in retracted position for starting said drive motor to put said machine in fast-forward drive.
Claim 17
Dependent Claim
77 words
The combination set forth in claim 15 including an unlatching solenoid for releasing said latch means, means responsive to return of said carrier plate for activating said fast-forward solenoid to shift said selector means into fast-forward position, and means responsive to said selector means being shifted to fast-forward position to activate next said scan solenoid to retract said carrier plate into latched position and thereupon to start said drive motor to put said machine into fast-forward drive.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |